Of course, you pay for unlimited internet through your cell phone provider, but they still require you to pay more just to put your device into a mobile hotspot. There is an easy fix, you simply have to edit the build.prop on your device. Of course, you will have to be rooted, such a small price to pay though.
Enabling your Android device to utilize a hotspot is still pretty easy; All you have to do is add the following line to your build.prop file. I used the Build.Prop Editor app in the Google Store.